InputStreamReader(InputStream in, CharsetDecoder dec, int minCharBufferSize):创建一个使用指定字符集解码器和最小字符缓冲区大小的InputStreamReader对象。 方法 int read() throws IOException:读取一个字符并返回。 int read(char cbuf[]) throws IOException:读取字符到缓冲区中,并返回字符个数。 int read(ch...
InputStreamReader(InputStream in, String charsetName):创建InputStreamReader对象,指定输入流对象和字符编码。 read(char[] cbuf, int off, int len):读取字符,并将读取的字符存储在缓冲区中,返回读取的字符数。 new String(char[] value, int offset, int count):将缓冲区中的字符转换为字符串。 测试用例 ...
load(InputStream inStream) 从输入流中读取属性列表(键和元素对)。 void KeyStore.load(InputStream stream, char[] password) 从给定输入流中加载此 KeyStore。参数类型为 InputStream 的java.security 中的构造方法 DigestInputStream(InputStream stream, MessageDigest digest) 使用指定的输入流和消息摘要创建...
for (int n; (n = input.read(b)) != -1;) { out.append(new String(b, 0, n)); } out.toString(); 3、Reader –>String BufferedReader in = new BufferedReader(new InputStreamReader(is)); StringBuffer buffer = new StringBuffer(); String line = " "; while ((line = in.readLine(...
byte、short、int、char 从javaSE7开始 switch支持字符String类型了 同时case标签必须为字符串常量或者字面量 switch(expression){ case value: //语句 break;//可选 case value: //语句 break;//可选 //你可以有任意数量的case语句 default://可选 ...
Native侧如何打印char指针 c++创建的(napi_create_object),或者作为参数传下来的js value,如果想持久持有,需要怎么做?以及怎么主动销毁或减少引用计数 在ArkTS层往C++层注册一个object或function,C++层可以按需往这个回调上进行扔消息同步到上层应用么,请提供示例?在注册object或function时,napi_env是否可以被长时持...
oos.writeChar('a'); oos.writeInt(20131015); oos.writeFloat(3.14F); oos.writeDouble(1.414D); // 写入HashMap对象 HashMap map = new HashMap(); for (int i = 0; i < 3; i++) { map.put("demo"+i, i); } oos.writeObject(map); ...
DataInputStream可以从int,long,float,double,char,byte[],boolean等中获取字节输入流的数据,DataOutputStream可以将int,long,float,double,char,byte[],boolean等数据写入字节输出流。代码: 1publicclassFile007 {2publicstaticvoidmain(String[] args) {3byte[] b =newbyte[] { 97, 98, 99, 100};4try(Dat...
Added in 1.1. Java documentation forjava.io.InputStreamReader. Portions of this page are modifications based on work created and shared by theAndroid Open Source Projectand used according to terms described in theCreative Commons 2.5 Attribution License. ...
Added in 1.0. Java documentation forjava.io.DataInputStream. Portions of this page are modifications based on work created and shared by theAndroid Open Source Projectand used according to terms described in theCreative Commons 2.5 Attribution License. ...